Apparatus for recording image data in accordance with a usage condition of colorant depositing means

ABSTRACT

A communication apparatus having a recording device operable in a first recording mode for effecting a multi- or full-color recording in response to image signals received and a second recording mode for effecting monochromatic recording in accordance with image signals received; a discriminator for discriminating that the operation in one of the first and second recording modes becomes incapable, and a device for notifying a result of discrimination by said discriminating means to the image signal sending station which sends the image signals to be recorded.

This application is a division of application Ser. No. 08/120,325 filedon Sep. 14, 1993 now U.S. Pat. No. 5,357,347, which is a continuationapplication of a continuation application of Ser. No. 07/942,330 filedon Sep. 9, 1992 now abandoned, which is a continuation application ofSer. No. 07/513,687 filed on Apr. 24, 1990 now abandoned.

FIELD OF THE INVENTION AND RELATED ART

The present invention relates to an image communication apparatus foreffecting recording on a recording medium such as a sheet which islocated at a remote position, with recording material such as ink.

A conventional image communication apparatus of this kind is operableselectively in a so-called remote mode wherein the recording operationis performed at a position remote from the operator and a so-calledlocal mode wherein the recording operation is performed in a recordingstation which is operated by the operator. More particularly, the formermode, the record informaton sent by the operator is received by anotherstation which is remote; and in the latter mode, the operator can watchthe recording operation and the result thereof.

This apparatus involves a problem that even if the sending station whichsends the read image to a receiving station instructs color imagerecording, the good recording operation can not be continued if therecording material such as chromatic ink or black ink is used up in thereceiving station.

In the conventional apparatus, it has been difficult to correctly detectthe lack of the recording material such as ink, and therefore, in orderto prevent the continuance of the recording operation without therecording material, the short of the ink in which a slight amount of theink still remains is discriminated, and the event is displayed, forexample.

However, in the local mode, the operator is often present in theneighborhood of the apparatus, and therefore, the prohibition of therecording in response to the above discrimination prevents the remainingrecording material from being consumed efficiently.

In the remote mode, the operator is often (far) away from the apparatus,and therefore, it is important to automatically prevent the incompleterecording irrespective of the presence or absence of the operator in theneighborhood of the information receiving apparatus.

In the conventional example, the good recording operation can not becontinued if the recording material such as chromatic color ink or blackink is used up, even if the sending station instructs the color imagerecording.

SUMMARY OF THE INVENTION

Accordingly, it is a principal object of the present invention toprovide a communication apparatus in which the good communication can becontinued even if the receiving station becomes short of the recordingmaterial such as ink.

According to an embodiment of the present invention, there is provided acommunication apparatus comprising recording means operable in a firstrecording mode for color image recording in accordance with the receivedimage signals and in a second recording mode for monochromaticrecording, means for discriminating that the recording operation in oneof the first and second recording mode becomes not possible, and meansfor transmitting a signal indicative of an output of said discriminatingmeans.

It is another object of the present invention to provide a communicationapparatus which can continue the receiving and recording operation evenwhen the receiving station becomes short of the recording materialduring the communication.

It is a further object of the present invention to provide an imagerecording apparatus which can efficiently use the recording materialsuch as ink.

It is a further object of the present invention to provide acommunication apparatus and an image recording apparatus having a novelfunction.

These and other objects, features and advantages of the presentinvention will become more apparent upon a consideration of thefollowing description of the preferred embodiments of the presentinvention taken in conjunction with the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows the machines connected by wiring or the like, according toan embodiment of the present invention.

FIG. 2 shows an operating station of the apparatus of FIG. 1.

FIG. 3 is a block diagram of a circuit in the apparatus of FIG. 1.

FIG. 4 shows the structure around a recording head of the apparatus ofFIG. 1.

FIGS. 5, 6-1, 6-1A, 6-1B, 6-2 and 7 are flow charts illustratingoperations of the machines shown in FIG. 1.

FIG. 8 is a block diagram in the apparatus according to anotherembodiment of the present invention.

FIGS. 9-12 illustrate an example of a sensor used in the apparatus ofFIG. 1.

PREFERRED EMBODIMENT OF THE PRESENT INVENTION

In the following description, an image recording apparatus operable inthe remote mode and the local mode is taken. However, the presentinvention is not limited to such an apparatus, but is applicable to anapparatus having a facsimile communication function, for example.

The preferred embodiment of the present invention will be described inconjunction with the accompanying drawings.

FIGS. 1-3 illustrate an apparatus according to an embodiment of thepresent invention. In FIG. 1, two image recording machines are connectedfor communication.

The image recording machine includes an operating station 101, acassette 102 for accommodating recording paper or sheets, a tray 103 forreceiving the sheet after the recording. Designated by a referencenumeral 104 is public wiring, cable for communicating the machines A andB electrically or optically to permit bidirectional communication.Designated by a reference numeral 105 is a telephone set connected withthe public wiring.

In the following description, the references have "A" for the machine A,and "B" for the machine B. For example, the operating stations of themachines A and B are designated by 101A and 101B, respectively.

FIG. 2 shows details of the operating stations 101A or 101B.

The operating station comprises a start key for starting a copyingoperation or a sending operation, a stop key 202 for stopping thecopying operation and the sending or receiving operation and a resettingkey 203 for initializing the machine. It further comprises a cleaningkey 204 for effecting the cleaning operation for the ink head which willbe described in detail hereinafter, ten-keys 205 for dialing in thetelephone function 105. Switches 210, 220, 230, 240 and 250 areassociated with corresponding displays; displays 211 and 212 correspondto the switch 210, for example, and the associated display or displaysare switched upon actuation of the switch. The switch 210 is foradjusting the image quality, more particularly, a sharp image or a softimage is selectable by the switch 210 changing the degree of edgeenhancement. The display 211 displays the sharp image selected; and thedisplay 212 displays the soft image selected. The key 220 is amagnification setting key. Upon each actuation of the key, themagnification set is changed. The displays 221, 222 and 223 display theselected magnification. The key 230 is for selecting the image density.In this embodiment, the density is selectable from "dark", "standard"and "light", which are displayed on the displays 231, 232 and 233,respectively, when selected. The key 240 is for selecting an imagerecording mode or a communication mode from a chromatic color mode, amonochromatic color mode (black and white mode, for example). The key240 is associated with the displays 241 and 242 which displays the modeselected by the key 240, by emitting light from one of them, forexample. The machines may be such that either one of them isautomatically selected by the communication protocol, irrespective ofthe operation of the key 240. The key 250 is a selecting key forselecting one of the local mode, the remote mode and the telephone mode.The selection is displayed on the display 251, 252 or 253 in associationwith the key 250. A display 261 is for paper jam to produce an alarmwhen the recording paper is not conveyed or discharged in good order.The display 262 is for displaying the lack of the recording paper orsheet. The displays 271, 272, 273 and 274 are for notifying the operatorof the lack or short of the ink, and they are provided for the fourcoloring inks. FIG. 3 is a block diagram of the machine of thisembodiment. In FIG. 3, reference numeral 301 designates an image sensorfor reading an original placed on an original supporting platen 109Awhich produces 8 bit image data for each of the red, green and bluecolor components. An image processor receives the data from the imagesensor 301 and converts them to yellow, magenta, cyan and black data,and further, processes for half-tone reproduction of density memorizingtype such as binary code type. A transmitter 305 functions to transmitsthe binary level signal from the processor 302 selectively to themachine B or to a head driver 304. The transmitters 305 in the machinesA and B have the similar structures, and communicate with each other totransmit the state of one of the machines to the other. The state of themachine is supplied to the controller 303. The head driver 304 serves todrive the heads 306, 307, 308 and 309 in accordance with the signalsfrom the transmitter 305. A sensor 310 is effective to discriminatewhether the ink remains in each of the heads 306-309. The sensor iseffective to output the ink remaining amount of each of the heads,separately. The machine is provided with a motor driver 311 for drivinga main scan motor 312 and a subordinate scan motor 313 for scanninglymoving the image sensor 301 relative to the original in the main scandirection and the subordinate scan direction, respectively, and a motordriver 314 for driving a main scan motor 315 and a subordinate scanmotor 316 for scanningly moving a carriage carrying the heads 306-309relative to the recording medium such as the paper in the main scan andsubordinate scan directions, respectively. The motor drivers 314 and 315are timing-controlled by the controller 303.

Referring to FIG. 4, the description will be made as to the structurearound the heads 306-309.

FIG. 4 is a perspective view showing the arrangements of the recordingheads 306-309, the main scan motor 315 and the subordinate scan motor316. The heads 306-309 are supported on the carriage 401, which in turnis moved by a belt 402. The belt 402 is driven by the main scan motor315. A sheet feeding roller 404 functions to feed the recording medium403 and is controlled and rotated by the subordinate scanning motor 316.

Referring to FIG. 9, the description will be made as to the sensor 310shown in FIG. 3. FIG. 9 shows the internal structure of the sensor 310together with one of the heads. The recording head has an ink ejectingportion having a function of ejecting the ink, a lead frame 12comprising conductor plates for electric connection between the inkejecting portion 11 and the ink ejection recording head by way ofwire-bonded portions, electrodes 13A and 13B formed together with thelead frame 12 as shown in FIG. 10 to detect a remaining amount of theink, which will be described in detail hereinafter, an ink passage forsupplying ink from an ink container 2 to the ink ejecting portion, and apartition wall 16 between the ink container 2 and the ink passage 14.

The lead frame 12 is embedded in a casing 17 made of resin material, forexample, of a unit constituted by integral ink container 2 and the inkejecting portion 11. Only the ink remaining amount detecting electrodes13A and 13B are exposed to the ink passage 14 through conduits 18. Theelectrodes are connected with a power source through a resistor R. Asshown in FIG. 11, the ink passage 14 is provided with an ink inlet port19 formed in the partition 16 and is also provided with alternate ribs20A, 20B and 20C, extending alternately from the top wall and the bottomwall.

The ink introduced into the passage 14 through the ink supply port 19from the ink container 2 is supplied to the next section beyond thefirst rib 20A by an unshown capirally tube, and is further supplied tothe ink ejecting portion 11 the way indicated by arrows. The ink is thenejected by the ejecting portion 11 during the recording operation andthe returning movement of the head. When the ink container 2 becomesempty with the result that the ink supply passage 14 is not suppliedwith the ink, the surface of the ink becomes as shown in FIG. 11, moreparticularly, the ink remaining amount detecting electrode 13A isexposed above the ink surface, so that the electric connection betweenthe detecting electrodes 13A and 13B is broken.

Thus, the event that the remaining amount of the ink reaches the limitcan be detected by the stop of the electric current. Since the electriccurrent flows, even if the rate thereof is small, as long as a thinlayer of the conductive ink exists bridging the detecting electrodes,there is a relationship as shown in FIG. 12 between the voltage V andthe remaining amount of the ink 1, when the detecting circuit is soconstructed that a constant current flows. Therefore, it is possible todetect the remaining amount of the ink.

As regards the embedding of the lead frame 12 in the casing 17, it ispreferably made by insert molding in order to prevent the leakage of theink. In addition, the detecting electrode 13A and 13B are preferablyplated with gold or made of stainless steel to provide sufficientresistivity to the ink. By constructing this way, it will suffice if apart of the lead frame 12 is exposed to the supply passage 14 withoutprovision of the conventional detecting means or without connectingleads to the detecting electrodes. The correct and reliable detection ispossible for the remainder of the ink.

The ink remainder detecting mechanism shown in FIG. 9 is provided ineach of the recording heads 306-309, as the sensor 310 shown in FIG. 3.Therefore, the sensor 310 can carry out the detection for each of theheads separately.

The operation of the apparatus will be described referring to FIGS. 3and 5 mainly. The operator places an original to be recorded on anunshown original platen. When the operator depresses the start key 201,the apparatus is first initialized (S1). Then, the original is scannedfor the image exposure by an unshown optical system (S3). The scanningdrive is accomplished by the motor driver 311 responsive to thecontroller 303 rotating the main scan motor 312 at a predeterminedspeed. The image sensor 301 receives the reflected light from theoriginal, and the reflection density data of the originalcolor-separated by red, blue and green filters are sequentially suppliedto the image processor 302 at the predetermined timing. The imageprocessor converts the analog signal from the image sensor 301 intodigital data, which are processed in a predetermined manner to beconverted to signals suitable for the ink head driving which will bedescribed hereinafter, and thereafter, the signals are sent to thetransmitter 305.

When the local mode is selected by the switch 250 at the operatingstation 101, the operation proceeds from step S7 to step S9, wherein thesignals are supplied to the head driver of its own apparatus A throughthe signal selection by the transmitter 305, and the recording operationis effected at step S9.

The head driver 304 supplies the drive signals at proper recordingtiming to each of four color heads, i.e., cyan head 306, magenta head307, yellow head 308 and black head 309. The heads 306-309 are supportedon the carriage 401, as shown in FIG. 4. Under the state of FIG. 4, therotational driving force of the main scan motor 315 is transmitted tothe carriage by the belt 402. In synchronism with the driving of themain scan motor 315 during the reading operation, the carriage is movedin the main scan direction.

Upon completion of recording on one scanning line from one lateral endto the opposite lateral end of the recording medium (recording paper)403, the main scan motor 315 moves the carriage 401 to the recordstarting position. In addition, the subordinate scan motor 316 isactuated to rotate the paper feeding roller 404 to feed the recordingpaper 403 through a predetermined distance. Then, the main scan isstarted again, and the recording operation is performed in the recordingwidth. By repeating the above operations, the recording is effected onthe entire surface of the recording sheet 403. Upon completion, therecording sheet is discharged to a discharge tray, so that the recordingoperation ends (S13).

It is added here that at step S17 which will hereinafter be described,the recording operation may be continued, not prohibited. Even if it isdetected that the remaining amount of the ink is small, there stillremains a small amount of ink in many cases. Particularly in the localmode including the step S17, the operator is in many cases around theapparatus. By continuing the recording operation at step S17, theremaining amount of the ink can be efficiently consumed.

During the recording operation described above, the remaining amount ofthe ink is detected at step S11 by detecting means shown in FIG. 9, forexample, and the lack of the ink is notified to the controller 303 bythe sensor 310. The controller 303 makes the display in the firstdisplay mode corresponding to one of the displays indicative of the lackof the ink for the ink among the displays 271, 272, 273 and 274corresponding to the kinds of the inks. In this embodiment, for example,the display is a flickering display having the on-state for 0.2 sec andthe off-state for 0.8 sec (S15). The display may be immediately afterthe detection, or it may be detected after a predetermined operation iscompleted; for example, it may be displayed after completion of theimage recording on one page. After the warning of the lack of the ink atstep S15, the subsequent processing and operations are prohibited toprevent improper image recording attributable to the lack of the ink.

When the remote mode is selected by operation of the switch 250 on theoperating station 101, and when the display 252 is on, the sequentialoperation proceeds from the step S7 to the step S19, where thetransmitter 305 transmits the signal as the recording signal to the headdriver of the apparatus B through a cable 104 and through thetransmitter of the apparatus B, the apparatus B having the samestructure as the apparatus B (S19).

Then, the same processing as in the focal mode is effected in theapparatus B so that the recording operation is performed by theapparatus B (S21). The remaining ink detection is similarly performedalso in the apparatus B, and therefore, the lack of the ink is detectedby the sensor and the controller of the apparatus B. If it occurs, thelack of the ink is displayed on the operating station 317 of theapparatus B to make the display in the second mode wherein it isflickered with on-state for 0.8 sec and the off-state for 0.2 sec.Simultaneously, the lack of the ink in the apparatus B is transmitted tothe controller 303 of the apparatus A through the cable 104 functioningas the transmitting path (S23). Then, the same second mode display ismade on the operating station 101 of the apparatus A. Thus, the displayon the operating station 101 of the apparatus A is both for the displayof the lack of the ink in the apparatus A and for that in the apparatusB. For the purpose of providing distinction between the two kinds ofdisplays, the states of the display are made different. Therefore, thestructure of the apparatus is simplified, and in addition, the state ofthe receiving apparatus can be discriminated on the sending andreceiving apparatuses.

After the detection of the lack of the ink in the apparatus B in theremote mode, the subsequent processing, such as the color datatransmission is stopped (S27), and thereafter, the discrimination ismade by the controller 301 of the apparatus A as to whether or not theapparatus B is switched to the local mode from the remote mode (S29).The switching may be automatic by the controller 301, or may be executedby the operator using an unshown switch. In addition, the mode changingswitch 250 may be used also for the switching. When the mode is switchedautomatically, the displays 251, 252 and 253 are switched,correspondingly.

After the mode is switched to the local mode, the sequential operationproceeds from the step S29 to the step S9 in which the above-describedoperation is continued until one of the ink materials is completely usedup. In this case, the recording operation is continued with the "no-ink"displayed in the second mode so as to distinguish it from the "no-ink"in the normal local mode.

It is possible that the "no-ink" occurs during the switched local modeoperation, at this time, the display is switched to the first modedisplay to display the "no-ink" in the normal local mode.

In this case, various processing operations during the recordingoperation are performed, and thereafter, the apparatus A displays"no-ink" to reject the subsequent recording operation.

FIG. 5 is a flow chart illustrating the sequential operation of theapparatus described in the foregoing.

In this embodiment, in the local mode, when the apparatus A receives theno-ink signal from the apparatus B at step S23, the transmission of theimage signals for the recording is prohibited, so that the erroneousimage signal transmission to the disabled receiving side can beprevented.

As described in the foregoing, according to this embodiment, the"no-ink" of the remote recording station which is away from the operatorso that the operator can not watch it, is displayed with a display modewhich is distinguished from the normal "no-ink" of the apparatus A.Therefore, the information is assuredly transmitted to the operator, andin addition, if instructed, the subsequent recording can be continued inthe local mode.

Referring to FIGS. 6-1 and 6-2, the operation of the apparatus accordingto another embodiment of the present invention will be described. FIGS.6-1A and 6-1B are partial views of the flow charts with 6-1 showing fullplacement of the partial views.

FIGS. 6-1 and 6-2 are flow charts which are a modification of theforegoing embodiments. The steps S1 and S3 in FIG. 6-1 are similar tothe steps S1 and S3 in FIG. 5, and therefore, the detailed descriptionthereof is omitted. After the step S3, the discrimination is made atstep S61 as to whether or not the color processing is selected by theswitch 240, for example. If so, the image signal read by the sensor 301is color-image-processed at step S63. If not, the image signal read bythe sensor 301 is processed for the monochromatic (black and white, forexample) recording (S62). In an example of such a processing, when theimage signal from the sensor 301 contains a red component R, a greencomponent G and a blue component B, it is deemed as a brightness signalY (Y=0.3R+0.6G+0.1B). After the step S63, the discrimination is made asto whether or not the apparatus is in the local mode or not at step S65.If so (local mode), the full-color image printing operation is performedusing all of the heads 306-309.

During the full-color printing operation, the remaining amount of theink in each of the heads is detected by the sensor 310 (S69). When thesensor 310 detects the reduction of the ink remaining amount, thedisplay indicative thereof is made (S70), and the printing operation isstopped, for example. In place of the stoppage, the printing operationcan be performed with the other ink or inks even if the correct colorink is used up, by changing the image processing operation.

When the full-color printing is completed (for one page, for example)the sequential operation goes out of the step S72, so that the recordingoperation ends.

If the remaining amount of any one of the yellow ink, the magenta ink,the cyan ink, at step S69, the recording can be continued using theblack ink only (an example of another ink) at step S70.

The apparatus may be so constructed that whether such a processing isperformed manually or not can be selected manually. When the operationis switched to the black ink operation, the driving conditions of thehead may be changed to match the recording head and the properties ofthe black ink.

If it is discriminated at step S65 that the local mode is not selectedby the mode selector key 250, and the remote mode is selected, thetransmitter 305 of the apparatus A is controlled so as to transmit theimage signal to the transmitter 305 of the apparatus B through thetransmission path 104 (S73). Then, the apparatus A waits for receptionof a signal indicative of permission of reception from the transmitter305 of the apparatus B (S74). From the apparatus B, one of the followingfive mode signals on the basis of the ink remaining amount detection foreach of the ink heads in the apparatus B: the five mode signals includea first mode in which amounts of remaining yellow ink, magenta ink, cyanink and black ink are sufficient, and therefore, the image signalreception is possible in either the color mode or the monochromaticmode; a second mode wherein the remaining amount of the black ink issufficient, but at least one of the yellow ink, magenta ink and cyan inkis not sufficient, and therefore, only the monochromatic mode receptionis possible; a third mode wherein the black ink is used up, but theremaining amounts of the yellow ink, magenta ink and the cyan ink aresufficient, and therefore, the color mode signal reception only ispossible; a fourth mode in which the four inks are all used up; and afifth mode covering the mode not falling in any of the above four mode.The apparatus A discriminates which mode is to be selected.

In this embodiment, the description will be made as to the case whereinthe first mode signal is received. In this case, the apparatus Aconfirms again as to whether the color mode is selected by the key 240(S77). If so (color mode), the signal read at step S3 is transmitted tothe apparatus B to execute the recording operation in the apparatus B(S79). Then, if it is discriminated at step S81 that one of the colorink material in the apparatus B is used up during the recordingoperation of the apparatus B, the step S85 is executed. If the colorinks are sufficient until the completion of the recording operation, thestep S79 is executed in which the recording operation is performed.

If the mode set at step S77 is a monochromatic mode, the operationproceeds to (c) in FIG. 7.

If the operation proceeds from step S81 to step S85 during the colorimage recording operation, the display 242 indicative of the black andwhite mode in the apparatus A is flickered. The flickering displaynotifies the operator of the apparatus A of the disabled communicationin the color mode.

Then, that is, after the flickering display, the discrimination is madeat step S92 as to whether or not the black and white mode is selected bythe key 240, and if so, the display 242 indicative of the black andwhite mode is actuated at step S94.

The switching to the black and white mode may be carried outautomatically without the necessity of the key 240 actuation.

If it is discriminated at step S81 that a signal indicative of the lackof the color ink is transmitted from the apparatus B, the step S92 maybe omitted, so that the step S94 and the subsequent steps may beautomatically executed.

Then, the instructions are produced for driving only the black ink headof the apparatus B (S96) to carry out the black and white recording. Bythis, the recording operation at the receiving station (apparatus B) canbe performed, and the received image can be seen.

In the black and white recording, the information transmitted from theapparatus A to the apparatus B can be converted from the color imagedata to the monochromatic image data.

This can be effected by combining the color data signals R, G and B, asdescribed hereinbefore, that is, Y=0.3R+0.6G+0.1B, for example, by whichthe amount of data transmitted reduced.

It is a possible alternative that the information data transmitted isnot changed from the color data to the monochromatic data at step S96,but the color image data, for example, R, G, B data are transmitted, andthe instruction signal indicative of executing the black and whiterecording is transmitted.

Steps S98 and S99 are similar to the steps S69 and S72, respectively,except for the following. In the step S69, the discrimination is made asto whether or not the color ink such as the yellow, magenta or cyan inkis present, but at step S98, the discrimination is made as to whetherthe black ink is present or not.

At step S100, similarly to the step S70, the no-ink is displayed. Thedisplay is simply to indicates the lack of the black ink.

Referring back to the above-described step S92, if the mode is notswitched to the black and white mode, the operation proceeds to step S93where the information sending and receiving operations are stopped.

If the color processing is not selected at step S61, the operationproceeds to step S62 where the black and white recording processing isperformed, and the sequential operation ends.

The black and white recording operation is similar to the operationdescribed in conjunction with steps S96-S100, and therefore the detaileddescription thereof are omitted for simplicity.

In this embodiment, the discrimination is made at step S61 as to whetheror not the color processing mode is selected, before the discriminationis made at step S65 as to whether or not the local mode is selected.Therefore, in this embodiment, the local mode can not be selected unlessafter the color processing mode is once selected.

This is done in order to put priority on the color processing in thelocal mode.

However, the operations in the steps S61-S62 and the operations in thestep S65 may be exchanged, so that the local mode selection isdiscriminated before the color-processing/black-and-white-processing isdiscriminated.

As described in the foregoing, according to this embodiment, even if theinformation receiving station located at such a position that theoperator (sender) can not watch the receiving station, such as a remoterecording station, the lack of the color ink in the receiving stationcan be notified of to the operator (sender). In addition, in accordancewith the instruction of the operator, the subsequent recording operationcan be switched to the black and white mode without stopping therecording operation, in the remote information recording operation.

In this embodiment, when such a trouble as described above occurs, theoperator can call a person around the remote receiving station by thehand set 105.

The telephone communication may be made through a public line or throughthe above-described cable provided in the apparatus. The presentinvention is applicable to any of the above cases.

In the foregoing, the description has been made as to the case where thecolor ink or color inks becomes short during the color modetransmission.

Next, the description will be made as to the case where the black inkbecomes short during the monochromatic mode communication, for example,the black and white mode communication, referring to FIG. 7.

The flow chart beginning with (c) is connected with (c) of FIG. 6. Inthis case, the selection is made to the monochromatic color mode, forexample, the black and white mode. If the black ink becomes short duringthe recording operation in the black and white mode, and if the sensor310 of the apparatus B detects the short of the black ink, the apparatusA performs predetermined process steps to notify the operator of the"no-ink" at step 110. If it is discriminated that the apparatus Bcontains a color ink material or ink materials at step S112, therecording instructions are transmitted to the driver of the apparatus B(S114) to continue the recording operation with the cyan ink, themagenta ink and/or the yellow ink (S116).

The percentages of the cyan ink, the magenta ink and the yellow ink maybe properly determined in accordance with the recording properties. Theymay be changed properly in accordance with the recording conditions ofthe recording heads. It may be determined whether the operational changeis effected during the recording operation or whether it is effectedafter the current recording cycle is completed, taking the remaininglevels of the ink into account.

At step S112, if there is no color ink, the recording operation isstopped (S120). When the black-and-white mode is selected in theoperating station 101 of the apparatus A, the display in the operatingstation 101 indicative of the black and white mode is changed to theother display mode, for example, from the on-state to the flickeringstate, in order to notify the operator of the above-described operationbeing performed.

FIG. 6-2 is a flow chart illustrating the operation of the receivingstation in the local mode. When the local mode information receivingoperation is selected in FIG. 6-2, the operation proceeds from step S120to step S122, and the subsequent steps are different depending onwhether the sending mode set in the sender is color mode ormonochromatic mode. If it is the color mode, the color printingoperation is carried out in accordance with the image data received(S124), and further, the discrimination is made at step S126 as towhether all of the color ink materials such as the yellow ink, magentaink and the cyan ink are sufficient. If so, the discrimination is madeas to whether the information reception is completed or not (S128), andif not, the step S124 is executed. If the ink is short, the operationproceeds from step S126 to S130 where the incapability of the colorprinting is notified to the sending station.

In the monochromatic mode, the operation proceeds from the step S122 tothe steps S132-S138. The steps S132-S138 are similar to the stepsS124-S130, but at step S126, the discrimination is made as to theremaining amounts of all of the color ink material, and at step S130,the result of discrimination is notified, whereas at step S134, theremaining amount of the black ink is detected, and the result isnotified at step S138.

In this embodiment, the remaining amount of the ink (recording material)is detected at proper intervals during the communicating operation, andtherefore, even if the ink is used up during the communicatingoperation, the proper measure can be taken.

In the flow chart of FIG. 6, if the color ink is used up at step S81,the mode is switched to the black and white recording mode. In place ofthe step S85, a step for receiving the signals by the memory 360 may beused. By doing so, even if the color ink is used up, the color recordingis possible afterwards.

FIG. 8 shows an embodiment wherein the memory means 360 includes memoryhaving a capacity of plural pages information for each of the yellow,magenta and cyan and black colors.

In the foregoing description of the embodiments, the recording means isin the form of an ink jet recording device, but the present invention isnot limited to this, and is applicable to various other devices, such asa thermal recording device, an electrophotographic device or the like.

While the invention has been described with reference to the structuresdisclosed herein, it is not confined to the details set forth and thisapplication is intended to cover such modifications or changes as maycome within the purposes of the improvements or the scope of thefollowing claims.

What is claimed is:
 1. An image recording apparatus comprising:means forreceiving image data; means for depositing a plurality of colorants inaccordance with the image data received by said receiving means; meansfor detecting a remaining condition by determining whether at least oneof remaining amounts of said plurality of colorants is less than apredetermined value or not; and means for retaining, for later use, saidimage data received by said receiving means when the remaining conditiondetected by said detecting means indicates that a remaining amount of atleast one of the colorants is below a predetermined level.
 2. Anapparatus according to claim 1 wherein said plurality of colorantsincludes yellow, magenta and cyan colorants.
 3. An apparatus accordingto claim 1, wherein said image data includes data for a plurality ofcolor components.
 4. An apparatus according to claim 3, wherein saidretaining means retains the data for the plurality of color components.5. An apparatus according to claim 1, wherein said detecting meansdetects independently a remaining condition of said depositing means foreach of said plurality of colorants.
 6. An image receiving apparatuscomprising:means for receiving image data; means for depositing an inkon a medium in accordance with the image data received by said receivingmeans; means for detecting a remaining condition by determining whethera remaining amount of the ink is less than a predetermined value or not;and means for retaining, for later use, said image data received by saidreceiving means when the remaining condition detected by said detectingmeans indicates that a remaining amount of at least one of the colorantsis below a predetermined level.
 7. An apparatus according to claim 6,wherein said image data includes data for a plurality of colorcomponents.
 8. An apparatus according to claim 7, wherein said retainingmeans retains the data for the plurality of color components.